马兰煤矿双电源切换装置的实践应用

Application of duplicate supply transfer device in Malan Mine

为满足井下供电系统的运行、变电站的两台变压器运行模式和井下不同设备的供电需要,马兰煤矿在井下中央变电所进线、地面变电站6 kV系统母线、地面风机房进线等矿井重要供电系统中应用了双电源切换装置,研究分析了井下各供电系统双电源快速切换的方案。实践表明,双电源切换装置有效减少了矿井各级变电所双回路电源供电系统由于单回路失电造成的采区工作面和通风系统出现大面积停电情况。

In order to meet the requirements of underground power supply system operation,two transformer operation modes of substation and power supply of different underground equipment,double power switching was applied in underground central substation incoming line,ground substation 6 kV system bus,ground wind machine room incoming line in Malan Mine,quick switching scheme of dual power supply in underground power supply system was studied.The practice showed that double power switching enabled to reduce the power cut of working face and ventilation system caused by single circuit loss.